2CA4 - Header Asymmetric Unit

HEADER OXIDOREDUCTASE 16-DEC-05 2CA4

TITLE SULFITE DEHYDROGENASE FROM STARKEYA NOVELLA MUTANT

COMPND MOL_ID: 1; COMPND 2 MOLECULE: SULFITE\:CYTOCHROME C OXIDOREDUCTASE SUBUNIT A; COMPND 3 CHAIN: A; COMPND 4 ENGINEERED: YES; COMPND 5 MUTATION: YES; COMPND 6 MOL_ID: 2; COMPND 7 MOLECULE: SULFITE\:CYTOCHROME C OXIDOREDUCTASE SUBUNIT B; COMPND 8 CHAIN: B; COMPND 9 ENGINEERED: YES

SOURCE MOL_ID: 1; SOURCE 2 ORGANISM_SCIENTIFIC: STARKEYA NOVELLA; SOURCE 3 ORGANISM_TAXID: 921; SOURCE 4 EXPRESSION_SYSTEM: RHODOBACTER CAPSULATUS; SOURCE 5 EXPRESSION_SYSTEM_TAXID: 1061; SOURCE 6 MOL_ID: 2; SOURCE 7 ORGANISM_SCIENTIFIC: STARKEYA NOVELLA; SOURCE 8 ORGANISM_TAXID: 921; SOURCE 9 EXPRESSION_SYSTEM: RHODOBACTER CAPSULATUS; SOURCE 10 EXPRESSION_SYSTEM_TAXID: 1061

KEYWDS SULFITE OXIDASE, MOLYBDOPTERIN, C-TYPE CYTOCHROME, HEME, KEYWDS 2 MUTANT, OXIDOREDUCTASE

EXPDTA X-RAY DIFFRACTION

AUTHOR S.BAILEY,U.KAPPLER

REVDAT 3 29-SEP-09 2CA4 1 JRNL REMARK REVDAT 2 24-FEB-09 2CA4 1 VERSN REVDAT 1 20-FEB-07 2CA4 0

JRNL AUTH S.BAILEY,T.RAPSON,K.JOHNSON-WINTERS,A.V.ASTASHKIN, JRNL AUTH 2 J.H.ENEMARK,U.KAPPLER JRNL TITL MOLECULAR BASIS FOR ENZYMATIC SULFITE OXIDATION: JRNL TITL 2 HOW THREE CONSERVED ACTIVE SITE RESIDUES SHAPE JRNL TITL 3 ENZYME ACTIVITY. JRNL REF J.BIOL.CHEM. V. 284 2053 2009 JRNL REFN ISSN 0021-9258 JRNL PMID 19004819 JRNL DOI 10.1074/JBC.M807718200

REMARK 1 REMARK 1 REFERENCE 1 REMARK 1 AUTH U.KAPPLER,S.BAILEY REMARK 1 TITL MOLECULAR BASIS OF INTRAMOLECULAR ELECTRON REMARK 1 TITL 2 TRANSFER IN SULFITE-OXIDIZING ENZYMES IS REVEALED REMARK 1 TITL 3 BY HIGH RESOLUTION STRUCTURE OF A HETERODIMERIC REMARK 1 TITL 4 COMPLEX OF THE CATALYTIC MOLYBDOPTERIN SUBUNIT AND REMARK 1 TITL 5 A C-TYPE CYTOCHROME SUBUNIT REMARK 1 REF J.BIOL.CHEM. V. 280 24999 2005 REMARK 1 REFN ISSN 0021-9258 REMARK 1 PMID 15863498 REMARK 1 DOI 10.1074/JBC.M503237200

REMARK 2 REMARK 2 RESOLUTION. 2.10 ANGSTROMS.

REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : REFMAC 5.2.0005 REMARK 3 AUTHORS : MURSHUDOV,VAGIN,DODSON REMARK 3 REMARK 3 REFINEMENT TARGET : MAXIMUM LIKELIHOOD REMARK 3 REMARK 3 DATA USED IN REFINEMENT. REMARK 3 RESOLUTION RANGE HIGH (ANGSTROMS) : 2.10 REMARK 3 RESOLUTION RANGE LOW (ANGSTROMS) : 20.00 REMARK 3 DATA CUTOFF (SIGMA(F)) : NULL REMARK 3 COMPLETENESS FOR RANGE (%) : 92.5 REMARK 3 NUMBER OF REFLECTIONS : 26183 REMARK 3 REMARK 3 FIT TO DATA USED IN REFINEMENT. REMARK 3 CROSS-VALIDATION METHOD : THROUGHOUT REMARK 3 FREE R VALUE TEST SET SELECTION : RANDOM REMARK 3 R VALUE (WORKING + TEST SET) : 0.150 REMARK 3 R VALUE (WORKING SET) : 0.147 REMARK 3 FREE R VALUE : 0.199 REMARK 3 FREE R VALUE TEST SET SIZE (%) : 5.200 REMARK 3 FREE R VALUE TEST SET COUNT : 1437 REMARK 3 REMARK 3 FIT IN THE HIGHEST RESOLUTION BIN. REMARK 3 TOTAL NUMBER OF BINS USED : 20 REMARK 3 BIN RESOLUTION RANGE HIGH (A) : 2.10 REMARK 3 BIN RESOLUTION RANGE LOW (A) : 2.15 REMARK 3 REFLECTION IN BIN (WORKING SET) : 1562 REMARK 3 BIN COMPLETENESS (WORKING+TEST) (%) : NULL REMARK 3 BIN R VALUE (WORKING SET) : 0.2030 REMARK 3 BIN FREE R VALUE SET COUNT : 88 REMARK 3 BIN FREE R VALUE : 0.2480 REMARK 3 REMARK 3 NUMBER OF NON-HYDROGEN ATOMS USED IN REFINEMENT. REMARK 3 PROTEIN ATOMS : 3457 REMARK 3 NUCLEIC ACID ATOMS : 0 REMARK 3 HETEROGEN ATOMS : 73 REMARK 3 SOLVENT ATOMS : 379 REMARK 3 REMARK 3 B VALUES. REMARK 3 FROM WILSON PLOT (A**2) : NULL REMARK 3 MEAN B VALUE (OVERALL, A**2) : 23.10 REMARK 3 OVERALL ANISOTROPIC B VALUE. REMARK 3 B11 (A**2) : 0.53000 REMARK 3 B22 (A**2) : -1.15000 REMARK 3 B33 (A**2) : 0.62000 REMARK 3 B12 (A**2) : 0.00000 REMARK 3 B13 (A**2) : 0.00000 REMARK 3 B23 (A**2) : 0.00000 REMARK 3 REMARK 3 ESTIMATED OVERALL COORDINATE ERROR. REMARK 3 ESU BASED ON R VALUE (A): 0.197 REMARK 3 ESU BASED ON FREE R VALUE (A): 0.169 REMARK 3 ESU BASED ON MAXIMUM LIKELIHOOD (A): 0.113 REMARK 3 ESU FOR B VALUES BASED ON MAXIMUM LIKELIHOOD (A**2): 4.337 REMARK 3 REMARK 3 CORRELATION COEFFICIENTS. REMARK 3 CORRELATION COEFFICIENT FO-FC : 0.968 REMARK 3 CORRELATION COEFFICIENT FO-FC FREE : 0.940 REMARK 3 REMARK 3 RMS DEVIATIONS FROM IDEAL VALUES COUNT RMS WEIGHT REMARK 3 BOND LENGTHS REFINED ATOMS (A): 3631 ; 0.012 ; 0.022 REMARK 3 BOND LENGTHS OTHERS (A): NULL ; NULL ; NULL REMARK 3 BOND ANGLES REFINED ATOMS (DEGREES): 4974 ; 1.394 ; 2.011 REMARK 3 BOND ANGLES OTHERS (DEGREES): NULL ; NULL ; NULL REMARK 3 TORSION ANGLES, PERIOD 1 (DEGREES): 452 ; 6.324 ; 5.000 REMARK 3 TORSION ANGLES, PERIOD 2 (DEGREES): 151 ;35.678 ;24.238 REMARK 3 TORSION ANGLES, PERIOD 3 (DEGREES): 538 ;14.863 ;15.000 REMARK 3 TORSION ANGLES, PERIOD 4 (DEGREES): 20 ;13.645 ;15.000 REMARK 3 CHIRAL-CENTER RESTRAINTS (A**3): 532 ; 0.084 ; 0.200 REMARK 3 GENERAL PLANES REFINED ATOMS (A): 2830 ; 0.005 ; 0.020 REMARK 3 GENERAL PLANES OTHERS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED CONTACTS REFINED ATOMS (A): 1589 ; 0.216 ; 0.200 REMARK 3 NON-BONDED CONTACTS OTHERS (A): NULL ; NULL ; NULL REMARK 3 NON-BONDED TORSION REFINED ATOMS (A): 2471 ; 0.303 ; 0.200 REMARK 3 NON-BONDED TORSION OTHERS (A): NULL ; NULL ; NULL REMARK 3 H-BOND (X...Y) REFINED ATOMS (A): 312 ; 0.154 ; 0.200 REMARK 3 H-BOND (X...Y) OTHERS (A): NULL ; NULL ; NULL REMARK 3 POTENTIAL METAL-ION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 POTENTIAL METAL-ION OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY VDW REFINED ATOMS (A): 36 ; 0.191 ; 0.200 REMARK 3 SYMMETRY VDW OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY H-BOND REFINED ATOMS (A): 28 ; 0.249 ; 0.200 REMARK 3 SYMMETRY H-BOND OTHERS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY METAL-ION REFINED ATOMS (A): NULL ; NULL ; NULL REMARK 3 SYMMETRY METAL-ION OTHERS (A): NULL ; NULL ; NULL REMARK 3 REMARK 3 ISOTROPIC THERMAL FACTOR RESTRAINTS. COUNT RMS WEIGHT REMARK 3 MAIN-CHAIN BOND REFINED ATOMS (A**2): 2316 ; 2.724 ; 2.000 REMARK 3 MAIN-CHAIN BOND OTHER ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 MAIN-CHAIN ANGLE REFINED ATOMS (A**2): 3646 ; 4.059 ; 4.000 REMARK 3 SIDE-CHAIN BOND REFINED ATOMS (A**2): 1521 ; 5.593 ; 4.000 REMARK 3 SIDE-CHAIN ANGLE REFINED ATOMS (A**2): 1326 ; 7.686 ; 6.000 REMARK 3 REMARK 3 ANISOTROPIC THERMAL FACTOR RESTRAINTS. COUNT RMS WEIGHT REMARK 3 RIGID-BOND RESTRAINTS (A**2): NULL ; NULL ; NULL REMARK 3 SPHERICITY; FREE ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 SPHERICITY; BONDED ATOMS (A**2): NULL ; NULL ; NULL REMARK 3 REMARK 3 NCS RESTRAINTS STATISTICS REMARK 3 NUMBER OF DIFFERENT NCS GROUPS : NULL REMARK 3 REMARK 3 TLS DETAILS REMARK 3 NUMBER OF TLS GROUPS : NULL REMARK 3 REMARK 3 BULK SOLVENT MODELLING. REMARK 3 METHOD USED : MASK REMARK 3 PARAMETERS FOR MASK CALCULATION REMARK 3 VDW PROBE RADIUS : 1.20 REMARK 3 ION PROBE RADIUS : 0.80 REMARK 3 SHRINKAGE RADIUS : 0.80 REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: HYDROGENS HAVE BEEN ADDED IN THE REMARK 3 RIDING POSITIONS.

REMARK 4 REMARK 4 2CA4 COMPLIES WITH FORMAT V. 3.15, 01-DEC-08

REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBE ON 19-DEC-05. REMARK 100 THE PDBE ID CODE IS EBI-26873.

REMARK 200 REMARK 200 EXPERIMENTAL DETAILS REMARK 200 EXPERIMENT TYPE : X-RAY DIFFRACTION REMARK 200 DATE OF DATA COLLECTION : 23-NOV-05 REMARK 200 TEMPERATURE (KELVIN) : 100.0 REMARK 200 PH : 7.40 REMARK 200 NUMBER OF CRYSTALS USED : 1 REMARK 200 REMARK 200 SYNCHROTRON (Y/N) : Y REMARK 200 RADIATION SOURCE : SRS REMARK 200 BEAMLINE : PX10.1 REMARK 200 X-RAY GENERATOR MODEL : NULL REMARK 200 MONOCHROMATIC OR LAUE (M/L) : M REMARK 200 WAVELENGTH OR RANGE (A) : 1.074 REMARK 200 MONOCHROMATOR : NULL REMARK 200 OPTICS : NULL REMARK 200 REMARK 200 DETECTOR TYPE : CCD REMARK 200 DETECTOR MANUFACTURER : MARRESEARCH REMARK 200 INTENSITY-INTEGRATION SOFTWARE : MOSFLM REMARK 200 DATA SCALING SOFTWARE : CCP4 (SCALA) REMARK 200 REMARK 200 NUMBER OF UNIQUE REFLECTIONS : 27649 REMARK 200 RESOLUTION RANGE HIGH (A) : 2.100 REMARK 200 RESOLUTION RANGE LOW (A) : 30.000 REMARK 200 REJECTION CRITERIA (SIGMA(I)) : 0.000 REMARK 200 REMARK 200 OVERALL. REMARK 200 COMPLETENESS FOR RANGE (%) : 93.0 REMARK 200 DATA REDUNDANCY : 3.400 REMARK 200 R MERGE (I) : 0.10000 REMARK 200 R SYM (I) : NULL REMARK 200 <I/SIGMA(I)> FOR THE DATA SET : 10.6000 REMARK 200 REMARK 200 IN THE HIGHEST RESOLUTION SHELL. REMARK 200 HIGHEST RESOLUTION SHELL, RANGE HIGH (A) : 2.10 REMARK 200 HIGHEST RESOLUTION SHELL, RANGE LOW (A) : 2.21 REMARK 200 COMPLETENESS FOR SHELL (%) : 83.8 REMARK 200 DATA REDUNDANCY IN SHELL : 2.00 REMARK 200 R MERGE FOR SHELL (I) : 0.42000 REMARK 200 R SYM FOR SHELL (I) : NULL REMARK 200 <I/SIGMA(I)> FOR SHELL : 2.100 REMARK 200 REMARK 200 DIFFRACTION PROTOCOL: SINGLE WAVELENGTH REMARK 200 METHOD USED TO DETERMINE THE STRUCTURE: OTHER REMARK 200 SOFTWARE USED: NULL REMARK 200 STARTING MODEL: PDB ENTRY 2BLF REMARK 200 REMARK 200 REMARK: NULL

REMARK 280 REMARK 280 CRYSTAL REMARK 280 SOLVENT CONTENT, VS (%): 46 REMARK 280 MATTHEWS COEFFICIENT, VM (ANGSTROMS**3/DA): 2.6 REMARK 280 REMARK 280 CRYSTALLIZATION CONDITIONS: 0.1M HEPES PH 7.4, 2.2 M REMARK 280 AMMONIUM SULFATE, 2% PEG 200

REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY REMARK 290 SYMMETRY OPERATORS FOR SPACE GROUP: P 21 21 2 REMARK 290 REMARK 290 SYMOP SYMMETRY REMARK 290 NNNMMM OPERATOR REMARK 290 1555 X,Y,Z REMARK 290 2555 -X,-Y,Z REMARK 290 3555 -X+1/2,Y+1/2,-Z REMARK 290 4555 X+1/2,-Y+1/2,-Z REMARK 290 REMARK 290 WHERE NNN -> OPERATOR NUMBER REMARK 290 MMM -> TRANSLATION VECTOR REMARK 290 REMARK 290 CRYSTALLOGRAPHIC SYMMETRY TRANSFORMATIONS REMARK 290 THE FOLLOWING TRANSFORMATIONS OPERATE ON THE ATOM/HETATM REMARK 290 RECORDS IN THIS ENTRY TO PRODUCE CRYSTALLOGRAPHICALLY REMARK 290 RELATED MOLECULES. REMARK 290 SMTRY1 1 1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 1 0.000000 1.000000 0.000000 0.00000 REMARK 290 SMTRY3 1 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 2 -1.000000 0.000000 0.000000 0.00000 REMARK 290 SMTRY2 2 0.000000 -1.000000 0.000000 0.00000 REMARK 290 SMTRY3 2 0.000000 0.000000 1.000000 0.00000 REMARK 290 SMTRY1 3 -1.000000 0.000000 0.000000 48.22250 REMARK 290 SMTRY2 3 0.000000 1.000000 0.000000 46.39950 REMARK 290 SMTRY3 3 0.000000 0.000000 -1.000000 0.00000 REMARK 290 SMTRY1 4 1.000000 0.000000 0.000000 48.22250 REMARK 290 SMTRY2 4 0.000000 -1.000000 0.000000 46.39950 REMARK 290 SMTRY3 4 0.000000 0.000000 -1.000000 0.00000 REMARK 290 REMARK 290 REMARK: NULL

REMARK 300 REMARK 300 BIOMOLECULE: 1 REMARK 300 SEE REMARK 350 FOR THE AUTHOR PROVIDED AND/OR PROGRAM REMARK 300 GENERATED ASSEMBLY INFORMATION FOR THE STRUCTURE IN REMARK 300 THIS ENTRY. THE REMARK MAY ALSO PROVIDE INFORMATION ON REMARK 300 BURIED SURFACE AREA.

REMARK 350 REMARK 350 GENERATING THE BIOMOLECULE REMARK 350 COORDINATES FOR A COMPLETE MULTIMER REPRESENTING THE KNOWN REMARK 350 BIOLOGICALLY SIGNIFICANT OLIGOMERIZATION STATE OF THE REMARK 350 MOLECULE CAN BE GENERATED BY APPLYING BIOMT TRANSFORMATIONS REMARK 350 GIVEN BELOW. BOTH NON-CRYSTALLOGRAPHIC AND REMARK 350 CRYSTALLOGRAPHIC OPERATIONS ARE GIVEN. REMARK 350 REMARK 350 BIOMOLECULE: 1 REMARK 350 AUTHOR DETERMINED BIOLOGICAL UNIT: DIMERIC REMARK 350 SOFTWARE DETERMINED QUATERNARY STRUCTURE: DIMERIC REMARK 350 SOFTWARE USED: PISA REMARK 350 TOTAL BURIED SURFACE AREA: 4820 ANGSTROM**2 REMARK 350 SURFACE AREA OF THE COMPLEX: 18600 ANGSTROM**2 REMARK 350 CHANGE IN SOLVENT FREE ENERGY: -46.83 KCAL/MOL REMARK 350 APPLY THE FOLLOWING TO CHAINS: A, B REMARK 350 BIOMT1 1 1.000000 0.000000 0.000000 0.00000 REMARK 350 BIOMT2 1 0.000000 1.000000 0.000000 0.00000 REMARK 350 BIOMT3 1 0.000000 0.000000 1.000000 0.00000

REMARK 400 REMARK 400 COMPOUND REMARK 400 ENGINEERED RESIDUE IN CHAIN A, HIS 89 TO ALA

REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: CLOSE CONTACTS REMARK 500 REMARK 500 THE FOLLOWING ATOMS THAT ARE RELATED BY CRYSTALLOGRAPHIC REMARK 500 SYMMETRY ARE IN CLOSE CONTACT. AN ATOM LOCATED WITHIN 0.15 REMARK 500 ANGSTROMS OF A SYMMETRY RELATED ATOM IS ASSUMED TO BE ON A REMARK 500 SPECIAL POSITION AND IS, THEREFORE, LISTED IN REMARK 375 REMARK 500 INSTEAD OF REMARK 500. ATOMS WITH NON-BLANK ALTERNATE REMARK 500 LOCATION INDICATORS ARE NOT INCLUDED IN THE CALCULATIONS. REMARK 500 REMARK 500 DISTANCE CUTOFF: REMARK 500 2.2 ANGSTROMS FOR CONTACTS NOT INVOLVING HYDROGEN ATOMS REMARK 500 1.6 ANGSTROMS FOR CONTACTS INVOLVING HYDROGEN ATOMS REMARK 500 REMARK 500 ATM1 RES C SSEQI ATM2 RES C SSEQI SSYMOP DISTANCE REMARK 500 REMARK 500 O HOH A 2232 O HOH A 2232 2655 2.06 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: TORSION ANGLES REMARK 500 REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS: REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 STANDARD TABLE: REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2) REMARK 500 REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI- REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400 REMARK 500 REMARK 500 M RES CSSEQI PSI PHI REMARK 500 ALA A 122 -145.09 -79.51 REMARK 500 ALA A 125 57.28 -98.55 REMARK 500 TYR A 199 130.70 -32.38 REMARK 500 ASN A 259 -104.37 -138.68 REMARK 500 ASN A 363 24.42 -152.44 REMARK 500 REMARK 500 REMARK: NULL

REMARK 525 REMARK 525 SOLVENT REMARK 525 REMARK 525 THE SOLVENT MOLECULES HAVE CHAIN IDENTIFIERS THAT REMARK 525 INDICATE THE POLYMER CHAIN WITH WHICH THEY ARE MOST REMARK 525 CLOSELY ASSOCIATED. THE REMARK LISTS ALL THE SOLVENT REMARK 525 MOLECULES WHICH ARE MORE THAN 5A AWAY FROM THE REMARK 525 NEAREST POLYMER CHAIN (M = MODEL NUMBER; REMARK 525 RES=RESIDUE NAME; C=CHAIN IDENTIFIER; SSEQ=SEQUENCE REMARK 525 NUMBER; I=INSERTION CODE):

REMARK 620 REMARK 620 METAL COORDINATION REMARK 620 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 620 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE): REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 MSS A1374 MOM1 REMARK 620 N RES CSSEQI ATOM REMARK 620 1 MSS A1374 S1' REMARK 620 2 CYS A 104 SG 143.7 REMARK 620 3 MSS A1374 S2' 82.7 90.0 REMARK 620 4 MSS A1374 OM1 105.6 109.9 113.2 REMARK 620 5 HOH A2301 O 86.6 81.4 148.7 98.0 REMARK 620 N 1 2 3 4 REMARK 620 REMARK 620 COORDINATION ANGLES FOR: M RES CSSEQI METAL REMARK 620 HEC B1582 FE REMARK 620 N RES CSSEQI ATOM REMARK 620 1 HIS B 533 NE2 REMARK 620 2 MET B 557 SD 174.9 REMARK 620 3 HEC B1582 NA 93.2 91.8 REMARK 620 4 HEC B1582 NB 89.9 91.1 89.4 REMARK 620 5 HEC B1582 NC 93.4 81.6 172.4 87.0 REMARK 620 6 HEC B1582 ND 92.5 86.7 89.1 177.2 94.2 REMARK 620 N 1 2 3 4 5

REMARK 700 REMARK 700 SHEET REMARK 700 THE SHEET STRUCTURE OF THIS MOLECULE IS BIFURCATED. IN REMARK 700 ORDER TO REPRESENT THIS FEATURE IN THE SHEET RECORDS BELOW, REMARK 700 TWO SHEETS ARE DEFINED.

REMARK 800 REMARK 800 SITE REMARK 800 SITE_IDENTIFIER: AC1 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE MSS A1374 REMARK 800 REMARK 800 SITE_IDENTIFIER: AC2 REMARK 800 EVIDENCE_CODE: SOFTWARE REMARK 800 SITE_DESCRIPTION: BINDING SITE FOR RESIDUE HEC B1582

REMARK 900 REMARK 900 RELATED ENTRIES REMARK 900 RELATED ID: 2BLF RELATED DB: PDB REMARK 900 SULFITE DEHYDROGENASE FROM STARKEYA NOVELLA REMARK 900 RELATED ID: 2BPB RELATED DB: PDB REMARK 900 SULFITE DEHYDROGENASE FROM STARKEYA NOVELLA REMARK 900 RELATED ID: 2C9X RELATED DB: PDB REMARK 900 SULFITE DEHYDROGENASE FROM STARKEYA NOVELLA REMARK 900 Y236F MUTANT REMARK 900 RELATED ID: 2CA3 RELATED DB: PDB REMARK 900 SULFITE DEHYDROGENASE FROM STARKEYA NOVELLA REMARK 900 R55M MUTANT

REMARK 999 REMARK 999 SEQUENCE REMARK 999 THE TRANSLATED SEQUENCES FOR CHAINS A AND B INCLUDE SIGNAL REMARK 999 PEPTIDES WHICH ARE NOT PART OF THE ACTIVE, PROCESSED REMARK 999 PROTEIN. THE SEQUENCES OF THE SIGNAL PEPTIDES REMARK 999 ARE CHAIN A MLNNRRQILKSAGAAALGLGAGTLGWPGRHAFA REMARK 999 CHAIN B MKRHNARTLAFSVVLGLSAAFAGSGLA

DBREF 2CA4 A 1 373 UNP Q9LA16 Q9LA16_THINO 33 405 DBREF 2CA4 B 501 581 UNP Q9LA15 Q9LA15_THINO 28 108

SEQADV 2CA4 ALA A 57 UNP Q9LA16 HIS 89 ENGINEERED MUTATION

SEQRES 1 A 373 ALA ASP THR VAL THR LEU PRO PHE ALA ASN GLY GLU ARG SEQRES 2 A 373 PRO LEU VAL MET TYR PRO GLY LYS ARG PRO LEU ILE GLY SEQRES 3 A 373 LEU THR ALA ARG PRO PRO GLN LEU GLU THR PRO PHE SER SEQRES 4 A 373 VAL PHE ASP GLU GLY LEU ILE THR PRO ASN ASP ALA PHE SEQRES 5 A 373 PHE VAL ARG TYR ALA LEU ALA GLY ILE PRO LEU GLU ILE SEQRES 6 A 373 ASP PRO ASP ALA PHE ARG LEU GLU ILE LYS GLY LYS VAL SEQRES 7 A 373 GLY THR PRO LEU SER LEU SER LEU GLN ASP LEU LYS ASN SEQRES 8 A 373 ASP PHE PRO ALA SER GLU VAL VAL ALA VAL ASN GLN CYS SEQRES 9 A 373 SER GLY ASN SER ARG GLY PHE VAL GLU PRO ARG VAL GLY SEQRES 10 A 373 GLY GLY GLN LEU ALA ASN GLY ALA MET GLY ASN ALA ARG SEQRES 11 A 373 TRP ARG GLY VAL PRO LEU LYS ALA VAL LEU GLU LYS ALA SEQRES 12 A 373 GLY VAL GLN ALA GLY ALA LYS GLN VAL THR PHE GLY GLY SEQRES 13 A 373 LEU ASP GLY PRO VAL ILE PRO GLU THR PRO ASP PHE VAL SEQRES 14 A 373 LYS ALA LEU SER ILE ASP HIS ALA THR ASP GLY GLU VAL SEQRES 15 A 373 MET LEU ALA TYR SER MET ASN GLY ALA ASP LEU PRO TRP SEQRES 16 A 373 LEU ASN GLY TYR PRO LEU ARG LEU VAL VAL PRO GLY TYR SEQRES 17 A 373 TYR GLY THR TYR TRP VAL LYS HIS LEU ASN GLU ILE THR SEQRES 18 A 373 VAL ILE ASP LYS GLU PHE ASP GLY PHE TRP MET LYS THR SEQRES 19 A 373 ALA TYR ARG ILE PRO ASP ASN ALA CYS ALA CYS THR GLU SEQRES 20 A 373 PRO GLY LYS ALA PRO THR ALA THR ILE PRO ILE ASN ARG SEQRES 21 A 373 PHE ASP VAL ARG SER PHE ILE THR ASN VAL GLU ASN GLY SEQRES 22 A 373 ALA SER VAL LYS ALA GLY GLU VAL PRO LEU ARG GLY ILE SEQRES 23 A 373 ALA PHE ASP GLY GLY TYR GLY ILE THR GLN VAL SER VAL SEQRES 24 A 373 SER ALA ASP ALA GLY LYS SER TRP THR ASN ALA THR LEU SEQRES 25 A 373 ASP PRO GLY LEU GLY LYS TYR SER PHE ARG GLY TRP LYS SEQRES 26 A 373 ALA VAL LEU PRO LEU THR LYS GLY ASP HIS VAL LEU MET SEQRES 27 A 373 CYS ARG ALA THR ASN ALA ARG GLY GLU THR GLN PRO MET SEQRES 28 A 373 GLN ALA THR TRP ASN PRO ALA GLY TYR MET ARG ASN VAL SEQRES 29 A 373 VAL GLU ALA THR ARG VAL ILE ALA ALA SEQRES 1 B 81 ALA PRO LEU THR TYR GLU LEU PRO ASP GLU THR ALA GLN SEQRES 2 B 81 LEU LYS PRO ALA PRO GLN PRO GLY PHE GLU ALA ALA GLN SEQRES 3 B 81 ASN ASN CYS ALA ALA CYS HIS SER VAL ASP TYR ILE ASN SEQRES 4 B 81 THR GLN PRO PRO GLY LYS GLY GLN ALA PHE TRP ASP ALA SEQRES 5 B 81 GLU VAL GLN LYS MET ILE LYS VAL TYR HIS ALA PRO VAL SEQRES 6 B 81 ASP GLU ALA ASP ALA LYS ALA ILE ALA ASP TYR LEU ALA SEQRES 7 B 81 LYS THR TYR

HET MSS A1374 26 HET HEC B1582 47

HETNAM MSS (MOLYBDOPTERIN-S,S)-OXO-MOLYBDENUM HETNAM HEC HEME C

HETSYN HEC 3,7,12,17-TETRAMETHYL-8,13-DIVINYL-2,18- HETSYN 2 HEC PORPHINEDIPROPIONIC ACID

FORMUL 3 MSS C10 H12 MO N5 O7 P S2 FORMUL 4 HEC C34 H34 FE N4 O4 FORMUL 5 HOH *379(H2 O1)

HELIX 1 1 PRO A 37 GLU A 43 5 7 HELIX 2 2 SER A 85 PHE A 93 1 9 HELIX 3 3 SER A 108 VAL A 112 5 5 HELIX 4 4 LEU A 136 GLY A 144 1 9 HELIX 5 5 ILE A 174 THR A 178 1 5 HELIX 6 6 PRO A 194 GLY A 198 5 5 HELIX 7 7 TYR A 209 TRP A 213 5 5 HELIX 8 8 GLY A 229 THR A 234 1 6 HELIX 9 9 PRO B 520 CYS B 529 1 10 HELIX 10 10 VAL B 535 THR B 540 1 6 HELIX 11 11 GLY B 546 VAL B 560 1 15 HELIX 12 12 ASP B 566 TYR B 581 1 16

SHEET 1 AA 4 THR A 3 THR A 5 0 SHEET 2 AA 4 GLU A 12 MET A 17 -1 O ARG A 13 N VAL A 4 SHEET 3 AA 4 PRO A 23 THR A 28 -1 O LEU A 24 N VAL A 16 SHEET 4 AA 4 GLN A 33 GLU A 35 -1 O GLN A 33 N LEU A 27 SHEET 1 AB 2 GLU A 64 ILE A 65 0 SHEET 2 AB 2 LEU B 503 THR B 504 -1 O LEU B 503 N ILE A 65 SHEET 1 AC 5 LEU A 82 LEU A 84 0 SHEET 2 AC 5 LEU A 72 GLY A 76 -1 O LEU A 72 N LEU A 84 SHEET 3 AC 5 LEU A 217 ILE A 223 1 O ASN A 218 N GLU A 73 SHEET 4 AC 5 GLN A 151 GLY A 156 -1 O GLN A 151 N ILE A 223 SHEET 5 AC 5 VAL A 169 SER A 173 -1 O LYS A 170 N PHE A 154 SHEET 1 AD 4 SER A 96 GLN A 103 0 SHEET 2 AD 4 MET A 126 PRO A 135 -1 O GLY A 127 N ASN A 102 SHEET 3 AD 4 MET A 183 MET A 188 -1 O LEU A 184 N VAL A 134 SHEET 4 AD 4 ARG A 202 VAL A 204 -1 O ARG A 202 N ALA A 185 SHEET 1 AE 4 SER A 96 GLN A 103 0 SHEET 2 AE 4 MET A 126 PRO A 135 -1 O GLY A 127 N ASN A 102 SHEET 3 AE 4 MET A 183 MET A 188 -1 O LEU A 184 N VAL A 134 SHEET 4 AE 4 ALA A 191 ASP A 192 -1 O ALA A 191 N MET A 188 SHEET 1 AF 2 ARG A 237 PRO A 239 0 SHEET 2 AF 2 THR A 255 PRO A 257 -1 O ILE A 256 N ILE A 238 SHEET 1 AG 4 ARG A 264 ILE A 267 0 SHEET 2 AG 4 GLY A 279 PHE A 288 -1 O ILE A 286 N PHE A 266 SHEET 3 AG 4 ARG A 322 LEU A 330 -1 O ARG A 322 N ALA A 287 SHEET 4 AG 4 THR A 311 LEU A 312 -1 O THR A 311 N LYS A 325 SHEET 1 AH 5 ALA A 274 LYS A 277 0 SHEET 2 AH 5 GLU A 366 ALA A 373 1 O ILE A 371 N VAL A 276 SHEET 3 AH 5 GLY A 333 ASN A 343 -1 O GLY A 333 N ALA A 372 SHEET 4 AH 5 ILE A 294 SER A 300 -1 N THR A 295 O THR A 342 SHEET 5 AH 5 THR A 308 ASN A 309 -1 O THR A 308 N VAL A 299

SSBOND 1 CYS A 243 CYS A 245 1555 1555 2.06

LINK MOM1 MSS A1374 SG CYS A 104 1555 1555 2.55 LINK MOM1 MSS A1374 O HOH A2301 1555 1555 2.33 LINK SG CYS B 529 CAB HEC B1582 1555 1555 2.07 LINK SG CYS B 532 CAC HEC B1582 1555 1555 1.94 LINK FE HEC B1582 SD MET B 557 1555 1555 2.41 LINK FE HEC B1582 NE2 HIS B 533 1555 1555 2.08

CISPEP 1 ARG A 30 PRO A 31 0 -4.21 CISPEP 2 GLU A 113 PRO A 114 0 -3.13 CISPEP 3 TYR A 199 PRO A 200 0 0.98

SITE 1 AC1 20 PHE A 53 VAL A 54 ARG A 55 TYR A 56 SITE 2 AC1 20 ALA A 57 ASN A 102 CYS A 104 SER A 105 SITE 3 AC1 20 ASP A 158 PHE A 168 ASN A 197 ARG A 202 SITE 4 AC1 20 GLY A 210 THR A 211 TRP A 213 VAL A 214 SITE 5 AC1 20 LYS A 215 TYR A 236 HOH A2300 HOH A2301 SITE 1 AC2 20 GLN A 33 ARG A 55 TYR A 56 ALA A 57 SITE 2 AC2 20 TRP A 231 HOH A2067 ASN B 528 CYS B 529 SITE 3 AC2 20 CYS B 532 HIS B 533 TYR B 537 GLN B 541 SITE 4 AC2 20 GLU B 553 LYS B 556 MET B 557 TYR B 561 SITE 5 AC2 20 ALA B 563 LEU B 577 HOH B2059 HOH B2078

CRYST1 96.445 92.799 55.817 90.00 90.00 90.00 P 21 21 2 4

ORIGX1 1.000000 0.000000 0.000000 0.00000

ORIGX2 0.000000 1.000000 0.000000 0.00000

ORIGX3 0.000000 0.000000 1.000000 0.00000

SCALE1 0.010369 0.000000 0.000000 0.00000

SCALE2 0.000000 0.010776 0.000000 0.00000

SCALE3 0.000000 0.000000 0.017916 0.00000